Blender base



FIG. 1 is a perspective view of a blender base showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; the bottom plan view not being shown as it is devoid of ornamentation; and,

FIG. 5 is a left side elevational view of thereof.

The broken lines shown in the Figures are used for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a blender base, as shown and described. 